AlertMe is a script that can send custom notifications on console events. It can be run after a command, monitor a process, or ping a server and send a mail or jabber notification of that event.
histogram creates a bar chart of data in your terminal. The width of the histogram is scaled to fit your terminal, and uses a resolution of 1/8th of a character.
A tree-structured information storage program.
A graphical tool for comparing and merging text files.